In a world first international study, Australian researchers have discovered genetic links to the eating disorder, anorexia.

Researchers from QIMR Berghofer medical research institute analysed the DNA of nearly 17,000 people suffering with anorexia, including nearly 3000 from Australia and New Zealand and found eight genes with direct links to the disorder.

A spokesperson for the study, Professor Nicholas Martin told the Sydney Morning Herald he is absolutely sure there are a lot more genes to find, and that ‘it’s just a question of getting a large enough sample size’.